icloud

I am working through an app that pulls data from an external web service into a private CloudKit database. The app is a single user app, however I am running into a race condition that I am not sure how to avoid. Every record in my external data has a unique identifier that I map to my CKRecord instances. The general app startup flow is: Fetch current CKRecords for the relevant record type. Fetch external records. For every external record, if it doesn't exist in CloudKit, create it via batch create (modification operation). Now, the issue is, if this process is kicked off on two of a user's

I have implemented Core Data as local storage for a new app and now want to enable iCloud synchronising across devices. I've been reading the documentation and some tutorials but can't get my head around how to switch between local and cloud storage, and how to synchronise changes from iCloud when cloud storage is enabled. Would somebody mind summarising the process so I can then go and research each stage? Thanks in advance! I've managed to get this working by following this tutorial: http://corsarus.com/2015/using-core-data-in-ios-part-4-core-data-syncing-with-icloud/ To summarise the

I have some problems because of iCloud and i want to turn off its for my app,how can i do it in the code of my application,i thought about my problem and the decision can be turning off the iCloud, thanks for help If you store files in Documents, they will be backed up to iCloud automatically. If you don't want that, the easiest way is to just store them somewhere else. Library/Caches is a good choice. If you really MUST store in Documents but you want to disable iCloud backup you can use the technique outlined here: https://developer.apple.com/library/ios/#qa/qa1719/_index.html 来源： https:/

I am working on an iPhone app that uses a subclass of UIManagedDocument and stores its documents on iCloud. It was all working fine until I changed my core data model / scheme (adding a new model version - like I had several times in the past few weeks). I added a new property and changed the data type of one of the existing properties. Now when I run my app I don't seem to be able to load my documents with UIManagedDocument 's -openWithCompletionHandler: . I can create new documents and read/write those. If I change the data model version back 1 then I am able to read the existing docs, but